72236164 has 48 divisors (see below), whose sum is σ = 169739136. Its totient is φ = 25977600.

The previous prime is 72236161. The next prime is 72236183. The reversal of 72236164 is 46163227.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72236161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5017 + ... + 13024.

It is an arithmetic number, because the mean of its divisors is an integer number (3536232).

Almost surely, 2^72236164 is an apocalyptic number.

It is an amenable number.

72236164 is an abundant number, since it is smaller than the sum of its proper divisors (97502972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72236164 is a wasteful number, since it uses less digits than its factorization.

72236164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18076 (or 18074 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 72236164 is about 8499.1860786784. The cubic root of 72236164 is about 416.4711209006.

The spelling of 72236164 in words is "seventy-two million, two hundred thirty-six thousand, one hundred sixty-four".